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Search options not deleted user 4096
3 votes
1 answer
340 views

$A_{\infty}$ singularity

What kind of singularity is commonly meant by $A_{\infty}$?
IMeasy's user avatar
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3 votes
0 answers
283 views

big and small resolutions of singularities of a 4-fold

Suppose we have a projective 4fold hypersurface $X\subset P^n$ with ordinary singularities along a smooth curve $C$, and suppose that there exist a projective small resolution $s:Y\to X$. let us den …
IMeasy's user avatar
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2 votes
2 answers
353 views

springer resolution over $\wedge^3 \mathbb{C}^6$

The action of $GL_6$ on $P(\wedge^3 \mathbb{C}^6)=P^{19}$ has 4 orbits (of dim 19, 18, 14, 9). Can you describe how the springer resolution applies to each of these orbits? It should have positive dim …
IMeasy's user avatar
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2 votes
1 answer
185 views

minimality/universality of the Springer resolution of a determinantal variety

Let $X\subset P^n$ be a singular determinantal variety and $S\to X$ its Springer resolution. Let $X'\to X$ another resolution of singularities (say, a blow-up). Does $S$ have some minimality/universal …
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